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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define pb push_back
  4. #define REP(i, a, b) for (int i = a; i <= b; i++)
  5. #define BACK(i, a, b) for (int i = a; i >= b; i--) 
  6. #define MOD 1000000007
  7. #define PI 4 * atan(1)
  8. #define sz(A) (int)A.size()
  9. typedef long long ll;
  10. typedef vector<int> vi;
  11. typedef pair<int, int> pii;
  12. typedef vector<long long> vll;
  13. typedef long int int32;
  14. typedef unsigned long int uint32;
  15. typedef long long int int64;
  16. typedef unsigned long long int uint64;
  17. struct task{
  18.     int start, end;
  19. };
  20. bool cmp(task a, task b){
  21.     return a.end < b.end;
  22. };
  23. void solve(int test){
  24.     int n; cin >> n;
  25.     task a[n];
  26.     REP(i,0,n-1){
  27.         cin >> a[i].start;
  28.     }
  29.     REP(i,0,n-1) cin >> a[i].end;
  30.     sort(a, a+n, cmp);
  31.     int res = 1, last = a[0].end;
  32.     REP(i,1,n-1){
  33.         if(a[i].start >= last){
  34.             res ++;
  35.             last = a[i].end;
  36.         }
  37.     }
  38.     cout << res << "\n";
  39.  
  40. }
  41.  
  42. int main(){
  43.     // ios_base::sync_with_stdio(false);
  44.     // cin.tie(NULL);
  45.     // cout.tie(NULL);
  46.     int typetest = 1;
  47.     if (typetest){
  48.         int t;
  49.         cin >> t;
  50.         cin.ignore();
  51.         REP(i, 1, t){
  52.             solve(i);
  53.         }
  54.     }
  55.     else solve(0);
  56. }
Success #stdin #stdout 0.01s 5304KB
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https://ideone.com/rHXeH3
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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